Contents

About FIT (Flattened Image Trees)

FIT is a "new", extensible, flexible U-boot Image format for representing multi-component kernel images.
FIT images can represent one or more components in an image in the form of a Tree using the DT architecture.
Some of the components include:

- kernel images
- ramdisks
- device trees
- cryptographic signatures.

The FIT architecture is capable of selecting different components (a kernel X, a DTB y, a ramdisk Z) from a single Image, and dynamically booting them. The presentation material attached below provides more details, examples and usecases of FIT.